beannameviewresolver.java

spring的源代码

/*
 * Copyright 2002-2004 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 

package org.springframework.web.servlet.view;

import java.util.Locale;

import org.springframework.beans.BeansException;
import org.springframework.web.context.support.WebApplicationObjectSupport;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.ViewResolver;

/**
 * Simple implementation of ViewResolver that interprets a view name
 * as bean name in the current application context, i.e. in the XML
 * file of the executing DispatcherServlet.
 *
 * <p>This resolver can be handy for small applications, keeping all
 * definitions ranging from controllers to views are in the same place.
 * For normal applications, XmlViewResolver will be the better choice,
 * as it separates the XML bean definitions in a dedicated views file.
 * View beans should virtually never have references to any other
 * application beans - such a separation will make this clear.
 *
 * <p>This ViewResolver does not support internationalization.
 * Consider ResourceBundleViewResolver if you need to apply
 * different view resources per locale.
 *
 * @author Juergen Hoeller
 * @since 18.06.2003
 * @see XmlViewResolver
 * @see ResourceBundleViewResolver
 */
public class BeanNameViewResolver extends WebApplicationObjectSupport implements ViewResolver {

	public View resolveViewName(String viewName, Locale locale) throws BeansException {
		return (View) getApplicationContext().getBean(viewName, View.class);
	}

}